A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is

(Integer answer)

(Given: Molar mass in g mol⁻¹: Ethyl alcohol: 46, water: 18)

Question

A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is

(Integer answer)

(Given: Molar mass in g mol⁻¹: Ethyl alcohol: 46, water: 18)

Canvas Classes · Accepted Answer

🧠 Mass Percent Needs Masses, Not Moles — Convert First

Look at this question. You are given moles of ethyl alcohol and water, but the question asks for mass percent. So the first move is obvious: convert moles to grams using the molar masses given. Many students try to compute a "mole percent" by mistake — that gives , which is not the answer.

Mass percent of solute is defined as:

Here the solute is ethyl alcohol (the minority component), and the solution is the full mixture of alcohol plu

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